Karl_Kleist

Karl Kleist

Karl Kleist (1879 - 1960) was a German psychiatrist who made notable advances in descriptive psychopathology and neuropsychology. His work links to that of Carl Wernicke and Karl Leonhard. Kleist coined the terms unipolar (‘einpolig’) and bipolar (‘zweipolig’) that are now used in the concepts of Unipolar depression and Bipolar Disorder.